But if hard evidence can help them fight discrimination through the justice system, here’s some.

A report published by the Federal Reserve Bank of San Francisco found discernible and systematic patterns of age discrimination, particularly for women.

"We report on new evidence from a field experiment testing for discrimination in hiring against older workers near retirement age," said David Newmark, a professor at the University of California at Irvine and a visiting scholar at the San Francisco Fed. "The evidence points to such discrimination, particularly against older women."